Buat lah 5 kalimat yg mengandung 2 kejadian past countinuos tense dan simple past!, exp: she was sleeping when the alarm went off. Dengan kalimat (+) (-) (?)

-when i was working for project suddenly the electricty went off
-shanti was taking a bath the telephone rang
-when i was going to home, my parents went to somewhere.

(+)we swam in the Tirtamas
(-)we not swim in the Tirtamas
(?)when we swim in the Tirtamas